Converters & Dev Tools

Format, validate and minify JSON in your browser — fast and private.

Convert CSV to a JSON array of objects — instantly, in your browser.

Convert a JSON array to CSV — client-side, no upload.

Encode and decode Base64 (UTF-8 safe) — entirely in your browser.

Generate SHA-1/256/384/512 hashes locally via the Web Crypto API.

Decode a JWT header and payload in your browser — no upload, no verify.

Create a downloadable QR code from any text or URL — client-side.

Percent-encode or decode URLs and query strings — instant, in your browser.

Convert colors between HEX, RGB and HSL with a live preview — client-side.

Generate random version 4 UUIDs in bulk via the Web Crypto API — free, local.

Create strong, random passwords in your browser — never sent anywhere.

Generate placeholder text by paragraph, sentence or word — instant and local.

Convert text to UPPER, lower, Title, camelCase, snake_case and more — in-browser.

Count words, characters, sentences and reading time live — nothing uploaded.

Turn any title into a clean URL slug — accents stripped, spaces hyphenated.

Convert integers between decimal, binary, octal and hexadecimal — instant, in your browser.

Encode special characters as HTML entities and decode them back — instant, in your browser.

Convert Unix timestamps to human-readable dates and back — seconds or milliseconds, entirely in your browser.

Convert between YAML and JSON instantly in your browser — bidirectional, no upload.

Test and debug JavaScript regular expressions live in your browser — highlight matches and inspect every result.

Compare two texts side-by-side and see a line-by-line diff with additions and removals highlighted — instant, in your browser.

Convert Markdown to HTML instantly — side-by-side editor with live preview and one-click download.

Translate any cron expression into plain English and preview the next 5 run times — instantly in your browser.

Translate any cron schedule into plain English instantly — live, in your browser.

Fix grammar, improve clarity, or rewrite text with AI — your text is not stored.

Proofread your writing and adjust the tone with AI — professional, casual, formal, and more.

Paste your CV and a job description — AI tailors your resume to match the role.